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Question

(vii) x = 2y − 1; y = 2x − 7

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Solution

x=2y-1 ...(i) y=2x-7 ..(ii)Substituting eq (i) in eq (ii), we get : y=22y-1-7y=4y-2-7-3y=-9 y=3 Substituting y=3 in eq (i), we get : x=2×3-1x=5Hence, x=5, y=3 is the solution of the given equations.

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